As for advanced magic, it can only appear after a certain number of low-level magic casts. For example, Wen Hui, after casting several ice spells, will appear auxiliary magic embellished with water, and she must use them to learn more advanced magic.
Wind source and soil concealment are all auxiliary tools. Can be used to learn other magic. But there are also some things to pay attention to. For example, wenhui is water, and you can't learn water magic. Because soil is like water, soil series cannot be learned.
The order of the five elements: water, fire, thunder, wind and earth.
That's about it. This is my own experience. I hope it helps you a little, hehe.